About Us The McCormack Group is located at 123 Interstate Park (near the intersection of Business I-85 and I-26) in Spartanburg, SC. Two of the main companies that are owned and operated by the McCormack Group are ServiceMaster Absolute Cleaning and Floor Coverings International.    ServiceMaster Absolute Cleaning of Spartanburg/Polk Co. has been in business since 1966. ServiceMaster specializes in Disaster Restoration Services